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  1. Vehicle Suspension
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RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty

RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty

Item # RAS3613-HD
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Our Price: $568.95
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3,000-lb Capacity. Convert your vehicle's leaf springs into a mechanically active suspension system. RAS adjusts to your load to level your ride. The system also increases stability, handling, and control by improving traction and reducing sway. Lowest Prices for the best vehicle suspension from RAS. RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty part number RAS3613-HD can be ordered online at or call 1-636-306-4830 for expert service.
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RAS Vehicle Suspension - RAS3613-HD

  • Leaf Springs
  • Rear Axle Suspension Enhancement
  • RAS
  • Heavy Duty

3,000-lb Capacity. Convert your vehicle's leaf springs into a mechanically active suspension system. RAS adjusts to your load to level your ride. The system also increases stability, handling, and control by improving traction and reducing sway.


  • Heavy-duty custom kit converts your vehicle's factory leaf springs into a mechanically active suspension system
    • Actively strengthens leaf springs for improved ride quality with or without a load
  • All-in-one suspension system improves stability, handling, and control
    • Eliminates axle wrap, wheel hop, and bottoming out
    • Reduces dangerous sway and body roll while cornering
    • Keeps your ride level when towing or hauling a heavy load
    • Improves traction while breaking and accelerating
  • Variable-rated coil tension springs automatically adjust to your vehicle's load
    • Activate immediately to support the extra weight
    • Disengage when unloaded, allowing your leaf springs to perform as intended
  • Customizable coil springs can be adjusted during installation to accommodate your towing or hauling needs
    • Independently adjustable for side-to-side leveling of off-center loads
  • Helps extend the life of leaf springs, shock absorbers, shackles, and even tires
  • Durable, epoxy e-coated steel construction
    • Corrosion-resistant brackets on the ends of each unit have a salt spray rating of more than 800 hours
  • Easy, bolt-on installation - no drilling, cutting, or welding required
    • Unit secures under the leaf spring and around the factory U-bolts
    • Fully assembled kit and hardware are included
  • Maintenance-free - adjustments and monitoring aren't needed once installed
  • Made in the USA


  • Weight capacity: 3,000 lbs
    • RoadActive Suspension will not increase your vehicle's weight-carrying capacity
  • 5-Year warranty
  • 30-Day money-back guarantee

All-In-One Suspension System

When towing or hauling a heavy load, you may encounter a number of problems that can make your driving experience difficult or dangerous, such as sway, body roll, or bottoming out. When your vehicle is weighted down, your factory leaf springs can't counteract these problems to the extent that they are supposed to. The weight will overpower the leaf springs and cause them to twist or flatten out. When that happens, they cannot support, level, or stabilize your vehicle effectively. Additionally, because your factory leaf springs are passive, they won't begin to tackle problems such as sway until those problems have already started.

Diagram of RAS Installed

RoadActive Suspension (RAS) kits enhance those passive leaf springs by converting them into a mechanically active, all-in-one suspension system. RAS kits have variable-rated coil tension springs that automatically adjust to your heavy load. Other suspension systems only solve a few problems and usually at the expense of other improvements your factory leaf springs may need. RAS, on the other hand, is a unique kit that provides everything you want in a suspension system without any trade-offs. It eliminates bottoming out like air springs, reduces sway and body roll like sway bars, keeps your ride level like helper springs, and improves traction and braking control like traction bars. This improves your vehicle's stability, handling, and control while you are towing or hauling, as well as when your vehicle is unloaded. RAS also makes your overall driving and towing experience safer and more comfortable, which greatly lessens driver fatigue.

How RAS Works

Close-Up of RAS Tension Spring

Each RAS unit has a powerful variable-rated coil tension spring that converts your passive leaf spring into a mechanically-active system. Once your vehicle is loaded, the tension springs immediately activate to absorb and support the weight. This allows your leaf springs to maintain their bowed position and keeps them from flattening out or flipping over, which greatly hinders their ability to bear a heavy load. The tension springs are variable-rated, which means that the heavier your load is, the more assistance they provide to your leaf springs. Because of this design, RAS reacts instantaneously, whereas hydraulics, air springs, and other suspension systems take time to react. And unlike your factory leaf springs, RAS stops sway and sag before they even start to happen. Additionally, when your vehicle is unloaded, the tension springs disengage, allowing your leaf springs to perform as intended without hardening your ride. RAS won't hinder your leaf springs' movement, nor will it cause any friction between any of the brackets.

Eliminates Axle Wrap and Wheel Hop

RAS Eliminates Axle Wrap

When under a heavy load, leaf springs are especially susceptible to axle wrap, which can cause wheel hop. Wheel hop is when the tires lose their grip on the road, causing a jarring, up-and-down movement. Axle wrap occurs when the circular motion of the tires cause the leaf springs to twist or rotate. If the leaf springs twist far enough, wheel hop can occur. RAS stabilizes your leaf springs by absorbing the force of the load they're trying to support. This eliminates axle wrap and wheel hop, as well as prevents your vehicle from bottoming out. Because of this, less strain is put on your vehicle. And by reducing some of this wear and tear, RAS helps extend the life of your leaf springs, shock absorbers, shackles, and even tires.

Reduces Sway and Body Roll

RAS eliminates sway and body roll

When driving along a curve while towing or hauling a heavy load, the back end of your vehicle or trailer can start to shift with that weight. If your factory leaf springs have flattened or twisted under this load, they won't be able to prevent it from shifting. Because of this, your trailer will sway away from your vehicle. This makes driving challenging and dangerous, as it increases the risk of body roll, which is when your vehicle drastically leans to one side. This can often cause you to completely lose control of your vehicle. Body roll is especially prevalent with multi-passenger vans and vehicles towing long campers, trailers, or boats. RAS provides a much safer ride by reinforcing your factory leaf springs and stabilizing your load. This helps prevent sway from occurring and reduces the chance of body roll while cornering, turning, and swerving. RAS also lessens the rocking motion that happens during windy conditions or when a semi passes by on the road.

Levels Your Ride and Improves Traction

RAS Levels Your Ride

When your vehicle is overloaded, the bulk of the weight transfers to the rear axle. Your factory leaf springs then become overwhelmed by this weight, as they are not strong enough to support it. This causes the back end of your vehicle to sag and the front end to rise, which means that the front tires have lost some of the grip they need with the road. In addition to loss of traction, it can also cause poor headlight aim, unintentional swerving, and an extremely bumpy and uncomfortable ride. RAS bolsters your factory leaf springs and enables them to provide support for your load without compromising ride quality or comfort. This keeps your ride level from front to back whether you are hauling a load in the bed or towing a boat, trailer, or camper. RAS also ensures that your tires have the traction they require while braking and accelerating, which improves the overall driving experience.

Customizable Coil Tension Springs

Adjusting Spring With Spacer

RAS is also customizable. During installation, the coil tension springs can be adjusted to 2 different tension settings or anywhere in between for improved road handling and support. To do this, rotate the springs while keeping the threaded rod still. As you turn the spring, use one of the 2 included spacers as a gauge to measure the widening gaps between the coils. In order for the RAS units to work as intended, you must tension the coils to a minimum of 25 percent with the 1mm white spacer and no more than 40 percent with the 2mm spacer. The springs can also be independently adjusted to compensate for off-center loads such as a handicap lift.

Easy, Bolt-On Installation

RAS Once Installed

This custom-fit kit comes fully assembled and is easy to install. Each RAS unit simply bolts onto your factory leaf spring with the included hardware, and drilling, welding, and cutting aren't required. First, position the eye hook bracket so that it wraps around the top of the factory leaf spring eye. Then the axle bracket secures under the leaf spring and around the factory U-bolts on the other side of the leaf spring pack. Once the maintenance-free RAS units are fully installed, you won't need to monitor them as you would with air springs.

Corrosion-Resistant Steel Construction

RAS Construction Close-Up

RAS is extremely durable and corrosion-resistant. The units are constructed of high-grade alloy steel, and they have an epoxy e-coat on the coil springs to provide extreme corrosion resistance. The brackets on the ends of each unit resist the effects of water and other elements, and they have a salt spray rating of more than 800 hours.

3613-THD RAS Custom HD Active Suspension System for OEM Leaf Springs - Rear Axle

Replaces RoadActive Suspension RAS3610, RAS3610-HD and 3613-HD

This Product Fits The Following Vehicles

Customer Reviews

RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty - RAS3613-HD

Average Customer Rating:  4.7 out of 5 stars   (508 Customer Reviews)

3,000-lb Capacity. Convert your vehicle's leaf springs into a mechanically active suspension system. RAS adjusts to your load to level your ride. The system also increases stability, handling, and control by improving traction and reducing sway.

2014 Dodge Ram Pickup

Had these put on 3500 Ram diesel. 8’ box with Northstar Igloo, 14,000 lb total. The overload springs are not ideal for much on truck. With truck camper they are no good. I have put the truck camper away for winter before a easy install. You difinitly need need a full height lift so I to take it in. I set it at 40%, the most. The ride empty with 10 lbs in air shocks is not bad at all, just stiffer I did notice sharp bumps more but is not bad and I am happy. Short box could be different. The truck handles empty way better like on rails no sway in fast corners.kinda fun. If you went with 20% softer setting I do not think it would be noticeable at all for empty, lighter loads, or shorter box. Wish I could of have a loaded review.

Dodge Ram Pickup

What an awesome addition to my truck (2017 Ram 3500 DRW). I have yet to haul my fifth wheel with the RAS, but as far as an empty weight ride it really smooth out the truck. I did not let my bride know that I added this system to the truck, she commented on the smooth ride on her first outing in the truck. Allison K. from e-trailer is very awesome, if you call into a trailer ask for her, she will answer all your questions and help you out.

2004 Dodge Ram Pickup

I have 04 dodge 2500 ram. This doesn’t does not go on as simply as all the YouTube videos suggest for this yr truck. Did not find out until reading instructions when product arrived. You have to drop rear spring shackles to attach the hook part of the kit. Disappointed in lack of ease.

2020 Dodge Ram Pickup

installation was very easy took more to remove the tires and jack up the truck than to install the roadmaster, only wished they had said that the 2mm spacer should be used for a 3500 ram hauling a 40 foot 5th wheel but there again I should have figured it out, have not had it on the road yet so will let you know how it tows


I highly recommend the Roadmaster Active Suspension for your tow vehicle. This is the second kit I've owned. The is no better overload system made. The kit acts like a rear sway bar, traction bar and overload. No more heavy body lean. No more wheel hop. Best part is that when your not towing, you don't feel like the kit is there.



Review from a similar RAS in Vehicle Suspension

I love the product since i have a 2021 toyota tacoma crew cab long bed with a campertop a robber mat and a jack thats around 450 pounds that a have at all times my truck was sittind low a lilbit plus it was swagging on the road i have summo spring to help my suspention but it was not enoght so i did my research but this was my better option i just installed it yerterday july-8-2021 and went for a ride where i ussually drive everyday and WOW now my truck rides very smood plus it lift my tryck 1 inch on the back now my tryck seats level it took me about 2 hrs but i did right i just follow the intructions and done i love the product the only thing that im concern is that the left side underneat the springleaft there is a breik line that is too close to the roadmaster suspention i hope that with the time dont hit that line because if it does thats the line for the breiks and i will be in trouble replacing it other wise evreything works great i recomend it 100% thanks guys i will buy it again?????best $500 that i spend on my truck

Its been working very well i loaded a couple of times and its awesome
Miguel - 07/10/2022


Review from a similar RAS in Vehicle Suspension

Total transformation! I never knew how bad my ride was until I installed these RoadMaster 3611-HD active suspension. It took longer to safely jack my truck up and remove tires than it was to install them! Absolutely a game changer. I carry about 1000 lbs of tools and supplies daily and like riding a Rollercoaster when hitting bumps. Now, i hit bumps on purpose just to feel these RoadMasters work their magic! Love them!

After a year of use , these RoadMaster 3611-HD active suspensions are still the best addition to my trucks performance. The streets of Houston are brutal and these active suspension breeze through them. I have 354000 on this truck and if I ever get another, this Active Suspension will be the first addition. Hands down!
Tracey T - 04/29/2022


Review from a similar RAS in Vehicle Suspension

I have a 2020 Silverado 1500 6 cyl Duramax with the Diesel Off Road package (3.73 diff). Travel trailer loaded is probably about 6,000 lb. I took several measurements during and after the spring kit installation. All measurements increased about an inch including the stock suspension with trailer and equalizer bars and with the spring kit installed at 1 mm spacing. A one inch improvement overall. I took the truck on a short drive and didn't notice any difference in ride (wasn't stiffer) which is what I wanted. Good to know that I can adjust the springs to the 2 mm spacing if I want to increase the suspension assist. Going camping next week and looking forward to see how it improves handling and porpoising.

After a year I am still pleased with this product. I had been adjusting the spring tension higher when towing and then back down after a trailering trip, but now just leave it adjusted to the trailer towing tension as the unloaded ride doesnt seem to suffer when the springs are tighter.
Rick M - 03/27/2022


Review from a similar RAS in Vehicle Suspension

Overall, very happy with the product. GMC didn't have any way to improve the truck from squatting when I hooked up my trailer. This kit didn't stop the squatting but significantly reduced the bounce on bad dips in roads, bridge/road transitions and bad railroad crossings.


Review from a similar RAS in Vehicle Suspension

Roadmaster active suspension seems to be built very well. I look forward to towing my travel trailer very soon to see if it improves the towing experience.

It has been a year now since I installed the Roadmaster Active Suspension system on my 2018 F150. We pull a 30 ft travel trailer from Wisconsin to Alabama.Last year the roads became very slippery when we encountered a rain snow mix. The truck and trailer tracked perfectly. I just hooked up the rig yesterday to take the same trip, leaving tomorrow. The truck definitely handles better with the RAS. Im glad I installed it and am sure it will last for years.
Dave H - 01/30/2022


Review from a similar RAS in Vehicle Suspension

Admitedly, I haven't even rolled my '07 Silverado 2500HD classic out of the garage yet, but I'm already very pleased. I had to go to a neighbor for a 10mm hex key socket and was slowed down by my 7yo kid 'helping', but it was still only 90 minutes my jack stands were in use. Easiest thing to do!
My only small downsides so far:
* needed to find a 10mm hex key that I apparently don't own, not sure why they picked that fastener
* wish I put some loc-tite on; just to make me feel better
* distance to drop the axle so the suspension fully hangs was way further than I expected; barely had my jack stands tall enough to get the job done.

These aren't really bad on the product, just notes for future customers. We're towing the 5er about an hour an a half this coming week, hopefully it steadies up a lot!


Review from a similar RAS in Vehicle Suspension

I received this kit in a very timely manner always do from etrailer have some issues with the instructions that come from roadmaster not a trailer the bump stop spacer didn’t say that you need to use the original bolt from the bump stop so it slowed me down greatly on the install however I took it out on a quick run without a load I do feel that this has made the unloaded ride smoother tomorrow I’ll be taking the trailer out for a bit and we’ll see how it works there and I’ll update this rating.


Review from a similar RAS in Vehicle Suspension

The bed of the truck measured 37.5" with a tool box weighing 200 lbs. The truck felt weighed down with passengers weighing 600lbs. Total weight 800lbs with a tank full of gas. After the install the truck rides smoother and certainly " like new". The stopping distance and acceleration distance have shortened drastically. I'm planning on loading up the bed and the Roadmaster Active Suspension RAS4611. My wife even drive it and she could feel the difference. "It drives like a muscle car." Buy it. Install time at a reputable mechanic shop was a 30 min. Install. I received them today at 1 pm and got it installed at 3:00 pm and finished the install at 3:30pm. It's an investment worth the price over traditional air bag system. Mechanic installed this on 2011 Nissan Titan SV.

What can I say. After a year of constantly driving through Texas roads and highways. I have moved twice and loaded the bed of my truck plus U-Haul 6x12 trailer and thy truck has not felt the load of it. The Active Road Suspension Leaf Spring is constantly sort of speak sensing if theres load so it can actively push it upwards. I have even driven up to the crazy roads of Pennsylvania and my pick drives smoother than when I got it from the dealer. Im telling you these things work. As any cautious driver upkeeping his own vehicle, I have periodically checked the bolts and location of the resistance in between the spring and it has not deflected or moved from its original installation. I believe every pick up must have these. It beats constantly putting air on the air bags especially in inclement weather like up here in Pennsylvania with the snow. I couldnt be more satisfied with this purchase. Thank you etrailer for offering this superb product.
Sergio R - 08/13/2021
Just like when I bought it.
Sergio R - 08/16/2021


Review from a similar RAS in Vehicle Suspension

Good service. Fast shipping an very easy installation. Can tell alittle difference already. Haven't hooked up to anything yet but always have a good bit in the bed 85 gallons of diesel an 2 full toolboxes


Review from a similar RAS in Vehicle Suspension

Haven’t got to tow with them on yet. But overall they look and feel like they are great quality and were extremely easy to install. I had one slight hiccup and had to call customer support. I was on the phone and connected to an actually person within a minute, great customer service.
Without a load, my 98 Blazer rides very smooth, only slightly stiffer than stock. Also raised the rear maybe an inch, but not a big deal.


Review from a similar RAS in Vehicle Suspension

This is my 2nd set of RAS! Just purchased for towing in my D-Max 2500HD. 1st set we’re on a Chevy 1500. I tow a 7000lb 259FKDS Freedom Express bumper pull and having the RAS-HD’s installed is night and day difference in towing. I have them set at 40% because of my cargo in the truck bed and tongue weight. I’m set up right now as I type on a 100 mile camping trip to set the springs and readjust if needed! So I say….”if you need support with towing, give RAS3611-HD a try…you won’t be disappointed with the results”


Review from a similar RAS in Vehicle Suspension

Installed this on my 2020 GMC 1500 Denali. The one thing I hated about my Denali was how much a small amount of weight made it squat. The Denali is meant for smooth ride not towing! These springs brought the back of my truck up by an inch. Truck doesn't squat when being "exuberant" leavin red lights. Ride quality when empty hasn't changed. These springs are AMAZING but, are not a cure for all your hauling needs! When I'm hauling my 1800lb side x side on my trailer they work great! Hauling my 4500lb tractor... Load stabilizer hitch still recommended!


Review from a similar RAS in Vehicle Suspension

The Roadmaster suspension kit did provide the additional stability and load carrying capability for towing a 6000lb rv travel trailer with a 2018 GMC Sierra 1500 Denali with Magnetic Ride Control system. However without the load the ride was rough and raised the rear of the vehicle so that night time driving with dim lights was reduced. The suspension kit was easy enough to remove during the off season of RV use, however is an inconvenience. It would be great to have Roadmaster create a system that would work with the Magnetic ride system without having to install / remove for the use and still continue to have a OEM smooth ride.

I reached out to the manufacturer about the rough ride that you have experienced. They did have a suggestion to make. It seems like that the system is adjusted to the 2 mm on the black shim. You can reduce the tension to 1-1.5 mm gap between the coils then it will help achieve a softer ride. You will want to raise the rear of the truck in the air and then leave the axle handing free. Using a dime as a gauge to redusce the gap between the coil springs. The adjustment can be done, with only one side in the air at a time.
-- Etrailer Expert Jenny N - 04/15/2022


Review from a similar RAS in Vehicle Suspension

Made a big difference in handling


Review from a similar RAS in Vehicle Suspension

Night and day difference on our 2011 F150. Before installing the vehicle was almost undrivable at highway speeds due to bouncing/jerking when pulling our trailer. The bounce/jerk has been virtually eliminated since installing the Active Suspension. Installation was a breeze, hardest part was getting the wheels off the truck due to corrosion between the wheel and the rotors. Total install time was roughly 1hr 15 minutes including the stubborn wheels. Initially I was hesitant to order due to the price, but very happy with the results, etrailer also did a great job at guiding me through the process, shipping and answering a few technical questions along the way. Highly recommend if you need a little more spring/payload.


Review from a similar RAS in Vehicle Suspension

Easy install 2011 Tacoma crewcab long bed. Helped with sag when towing microlite travel trailer. Keeps the rear end raised in the rear a little when unloaded, but I like that look. Only complaint and its nothing big when truck is unhooked and empty when i get out I can hear alittle noise from RAS. Sort of like a bedspring coil. Night pic is with RAS installed daylight pic is with out installed

Still working great. Towed a Flaggstaff microlite 23LB Travel trailer prob between 5 and 5500 LB’s to Niagra Falls with no problems, truck sat level with trailer and 2 adults,2kids. Getting ready to make a 2,000 mile round trip to disney in florida in a few weeks.
Rich - 03/10/2021


Review from a similar RAS in Vehicle Suspension

Silverado 2500HD
Ready to install out
of the box. Simply extend the RAS out to become the proper length (shortened for shipping), remove the bolt to allow the fork to drop over the leaf spring and reconnect, hand tighten the assembly via turning the spring and check the "centered alignment", then tighten with a wrench (my socket wouldn't quite fit) until gap disc slips freely between the expanded spring. Took me longer to prep truck on a jack and two axle stands/remove tires for improved accessibility than the actual RAS installations.

Added 1 inch of lift "empty weight". Will see how much squat is removed under load of our travel trailer this weekend!

I'm not very mechanically inclined, and found this very easy to self-install - a level 1 project.

NOTE: etrailer customer service also took their time w/ me over the phone to ensure I had ordered the proper kit for my vehicle, and although my order was sent to the vendor for direct shipment, I got it to Alaska in less than 10 days.


Review from a similar RAS in Vehicle Suspension

I found this items cheaper on another site but etrailer match and then beat the price.
Item installed super easy, more work jacking up the truck and taking the tires off. Can be installed with out removing tires just make it easier to get it in. The item did lift the back of my truck 1 inch. See Pics.

Makes the ride a little stiffer but its a truck. Great when pulling my 37 camper. Helps out a lot!!!!
William - 03/30/2021


Review from a similar RAS in Vehicle Suspension

I tow a 31 foot trailer with my 1/2 ton. Before adding this product the sway was still noticeable, especially with 30 to 40 km wind gust, even with a Curt 4 point sway control hitch. After adding this product I noticed significantly lower sway and better towing.

Show More Reviews

See what our Experts say about this RAS Vehicle Suspension

  • RoadActive Suspension System for 2016 Ram 3500
    The correct RoadActive Suspension Custom Leaf Spring Enhancement Kit for a 2016 Ram 3500 is part # RAS3613-HD. This will work if your truck has single rear wheels as well as dual rear wheels, but please keep in mind it will NOT fit if your '16 Ram has factory top overload springs, and it is designed to fit leaf springs with the rear shackle that swings BELOW the rear eye. The RAS Enhancement Kit # RAS3613-HD will continually reinforcing your Ram's leaf springs, making it an active system...
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  • Recommended RoadActive Suspension for 2017 Ram 3500 Dual Rear Wheel
    For your 2017 Ram 3500 Dual Rear Wheel, the RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty # RAS3613-HD is the confirmed fit as long as you DO NOT have the factory top overload springs. It has a weight capacity of 3,000 lbs to assist your factory leaf spring suspension. I've attached the installation instructions to assist.
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  • How Do I Know If My 17 Ram 3500 Has Factory Top Overload Springs Or Not?
    You are correct in that the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3613-HD will not fit if your truck has top overload springs. These can be identified by looking at the top of your leaf springs and will basically look like another leaf that is not connected to the rest. It will have a steeper curve and there will be pads, for the lack of a better term, that the end of this spring will make contact with once compressed. I included an image of a typical top overload...
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  • Recommended RoadActive Suspension Kit For A 2022 Ram 3500 With Factory Air Suspension
    This is actually something I have spoken to RoadActive Suspension about before and I can say for sure that there is no issue with the Custom Leaf Spring Enhancement Kit # RAS3613-HD fitting your 2022 Ram 3500 even with the Factory Air Suspension and single or dual rear wheels, so it's adaptable. These are also American made and are a pretty quick and easy install, so that's a big plus. However, this does not fit vehicles with factory top overload springs, so that is something to keep in mind.
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  • Suspension Enhancement Recommendation for 2016 Ram 3500
    There are some combinations of suspension enhancement components that can fit together but what we have found is that if you are still experiencing sag on a 3500 truck with one kit installed you probably are exceeding the towing capacity of the truck. The absolute best solution I can provide is the RoadActive Suspension kit part # RAS3613-HD which will give you the support you are wanting, is adjustable, and improves ride quality and handling.
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  • Suspension Enhancement to Reduce Body Roll in 2005 Dodge Ram 2500 4X4
    For your 2005 Dodge Ram 2500 I recommend the RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty # RAS3613-HD. The RAS kit converts your leaf springs into a mechanically active suspension system. This will improve stability, keep you level, and reduce the sway and body roll you are currently experiencing. This kit will also extend the life of your suspension components and tires. The RAS system features an epoxy e-coated steel construction and a bolt-on installation....
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  • Recommended RoadActive Suspension for 2013 Ram 3500 4x4
    The RoadActive Suspension # RAS3610 is a confirmed fit for your 2013 Ram 3500 SRW as long as you have the 3 inch wide springs. If you do not have the 3 inch wide springs, then I recommend instead using the heavy duty system # RAS3613-HD. These products utilize a coil tension spring that activates to absorb and support the weight eliminating axle wrap and wheel hop, so it will eliminate your problem.
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  • Will RAS Leaf Spring Enhancement Work With Air Helper Springs On 2010 Dodge Ram 2500 To Stop Sway?
    I would be happy to help! First off if the weight of your truck bed camper exceeds the payload capacity of your 2010 Dodge Ram 2500 then no suspension enhancement will fix the issue and your only option would be using a truck with a higher payload capacity. Suspension enhancement does not increase the capacities of your truck, and only supports your suspension while it is working within its capacities. With that said as long as your air helper spring kit bolts to the axle and not the...
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  • Can RoadActive Suspension for 2018 Ram 3500 Fit With Firestone Air Bags
    There isn't anything that would prevent the RoadActive Suspension kit part # RAS3613-HD from installing on your 2018 Ram 3500 that also has a Firestone air bag kit # F2615 installed as well. The two kits will both fit without any interference from the other. What I would do is remove the air pressure from the bags at first to see how the suspension performs with just the RAS kit and then as needed add air pressure. Most likely you'll find that you won't need any air pressure, or if so it...
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  • Comparing RoadActive Suspension and Air Bags for a 2017 Ram 3500
    I have used both RoadActive Suspension (RAS) and Air Bags; I don't think it's even close. The superior option is an air bag kit, the Air Lift LoadLifter 7500 XL Air Helper Springs part # AL57595. They are both going to provide support and reduce rear end sag which will subsequently decreasing front end lift and the issues with this such as handling and braking. The main benefit of air bags is that you can adjust them on the fly and much more easily than the RAS. You can also let the air...
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  • Determining Correct RAS Leaf Spring Enhancement Kit Fits 2004 Dodge Ram 2500 2WD
    For your 2004 Dodge Ram 2500 2WD Pickup I recommend the RoadActive Suspension Leaf Spring Enhancement Kit - Heavy Duty # RAS3613-HD which is confirmed to fit your truck as long as you do not have top overload springs. This kit has a 3000lb load leveling capacity, but will also reduce sway and eliminate axle wrap giving you a better loaded and unloaded ride. If your truck has the top overload springs you will need to go with a different style of suspension enhancement. In that case I...
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  • Sway Control Options For A 2006 Dodge Ram 2500 With Gooseneck Hitch
    I do have a few option available for you however, the only sway control kits we have for your 2006 Dodge Ram 2500 are the Roadmaster Reflex Steering Stabilizer part # RM-RBK20-RSSB and the RoadActive Suspension Kit part # RAS3613-HD. The steering stabilizer is designed to reduce/correct sway, in a similar way to a standard sway bar. The steering stabilizer is for the front of the vehicle whereas the active suspension is designed for the rear. As you have a gooseneck installed on your vehicle,...
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  • Air Bags or RAS for a 2022 Ram 3500 Towing a 5th Wheel Trailer?
    Since your 5th wheel trailer has that high of a pin weight I recommend going with air bags over an RAS system. The RoadActive Suspension Custom Leaf Spring Enhancement Kit item # RAS3613-HD you were looking at tops out at 3,000 lbs and does not work if you have a top overload spring. For your 2022 Ram 3500 SRW you will want the Firestone Ride-Rite Air Helper Springs item # F2615. These springs have a 5,000 lbs capacity which will offer you plenty of support when towing. When you are not...
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  • Will the RoadActive Suspension System Fit a 2021 Ram 3500 with Factory Air Suspension
    I reached out to my contact over at RoadActive Suspensions and he reported that they've seen no issues with the Roadmaster RAS # RAS3613-HD interfering with the factory air suspension system. I really love the added support these systems give without having to adjust constantly after installation like an air bag system. The thing you will need to pay attention to on your suspension is whether or not your 2021 Ram 3500 has the top overload spring; as long as you don't have the top overload...
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  • Recommended Suspension Enhancement for 2016 Ram 3500 Dually
    For your 2016 Ram dually, the SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle # SSR-301-40-2 are my recommendation for you. This will help minimize body roll and will stabilize the back of your truck while also reducing sag. If your trailer is swaying too much you may want to consider a weight distribution system with sway control if it is a standard coupler trailer. A WD system needs to be rated based on the trailer tongue weight as well as the cargo weight behind the...
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  • Compatible Suspension Enhancement For A 2009 Dodge Ram 2500 4x4 With 2 Leveling Kit
    The SumoSprings Rebel Custom Helper Springs # SSR-301-47-2 are a confirmed fit for the rear axle of your 2009 Dodge Ram 2500 4x4 Pickup. The SumoSprings Solo Custom Helper Springs # SSF-302-47 unfortunately will not accommodate a spacer but you can instead use the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3613-HD. These will attach to the leaf spring instead so you won't have to worry about spacer compatibility. Note: The # RAS3613-HD do not fit vehicles with factory...
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Info for this part was:

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Updated by:
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